Sorting algorithm for large data files

Developer Needed for Data Processing & Automation Tool Job Description: Looking for a developer to build a high-performance tool for processing and automating operations on large datasets (Excel/CSV). The tool should handle very large files efficiently and allow flexible, user-defined operations such as sorting, filtering, and data manipulation. Requirements: Strong focus on performance and efficiency Ability to process large Excel/CSV files Support user-defined rules (sorting, filtering, transformations, etc.) Output results to a new structured file Preferred: Experience with large-scale data processing Knowledge of efficient algorithms and optimization Familiarity with Excel/CSV parsing